Maddasion, Donavon
Current rating: 1485
Record: 4-5
| Grand Prix Columbus 2019 (modern) | starting rating: 1502 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 160 | [anonymous] | Won 2-0 | +181520 |
| 2modern | 56 | Bruggeman, Bobby (1596) | Won 2-0 | +191539 |
| 3modern | 94 | Everhart, Jon (1538) | Lost 1-2 | -181521 |
| 4modern | 91 | Levy, Andrew (1518) | Lost 0-2 | -181503 |
| 5modern | 240 | Kowalski, Noah (1506) | Lost 1-2 | -181485 |
| average opponent: 1524record: 2-3 | new rating: 1485 | |||
| Grand Prix Detroit 2019 (M20 limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 47 | Feenstra, James (1500) | Won 2-0 | +181518 |
| 2sealed | 98 | Redd, Devin (1490) | Won 2-1 | +171535 |
| 3sealed | 24 | Cooper, Geddes (1576) | Lost 1-2 | -171518 |
| 4sealed | 196 | Kuchar, Craig (1639) | Lost 1-2 | -161502 |
| average opponent: 1551record: 2-2 | new rating: 1502 | |||